Q: Is 1,264,263 a Prime Number?
A: No, 1,264,263 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1264263 can be evenly divided by 1 3 7 11 13 21 33 39 77 91 143 231 273 421 429 1,001 1,263 2,947 3,003 4,631 5,473 8,841 13,893 16,419 32,417 38,311 60,203 97,251 114,933 180,609 421,421 and 1,264,263, with no remainder.
Since 1,264,263 cannot be divided by just 1 and 1,264,263, it is not a prime number.